Multipole and superconducting state in PrIr2Zn20 probed by muon spin relaxation

Physical Reviews B 85 巻 23 号 235152- 頁 2012 発行
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タイトル ( eng )
Multipole and superconducting state in PrIr2Zn20 probed by muon spin relaxation
作成者
Higemoto Wataru
Ito Takashi
Ninomiya Kazuhiko
Matsumoto Keisuke
収録物名
Physical Reviews B
85
23
開始ページ 235152
抄録
We performed muon spin rotation and relaxation (mu SR) measurements in the caged-structure heavy-fermion system PrIr2Zn20 to elucidate its magnetic and superconducting properties. Temperature-independent mu SR spectra were observed below 1 K, indicating that the phase transition at 0.11 K is of a nonmagnetic origin, most probably pure quadrupole ordering. In the superconducting phase, no sign of unconventional superconductivity, such as superconductivity with broken time-reversal symmetry, was seen below T-c = 0.05 K. We also observed spontaneous muon spin precession in zero field in the paramagnetic phase below 15 K, suggesting that unusual coupling between Pr-141 nuclei and muons is realized in PrIr2Zn20.
NDC分類
物理学 [ 420 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 2012
権利情報
(c) 2011 American Physical Society
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.85.235152
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.85.235152